Plastic box



FIG. 1 is a front, right side top perspective view of the plastic box showing my new design;

FIG. 2 is a rear, left side, bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a rear elevational view thereof;

FIG. 8 is a front elevational view thereof; and,

FIG. 9 is a view with the cover of the plastic box shown in an open position.

In FIG. 9, the broken lines are for the purpose of illustrating portions of the plastic box that form no part of the claimed design. 

CLAIM The ornamental design for a plastic box, as shown and described. 